Tube-expander.



J. O. TASSEY.

TUBE BXPANDER. APPLICATION FILED Fame). 1912.

2 SHEETS-SHEET 1.

Patented Mar. 11

RX ask B y a H iuH.| m w M g 0 \m& R?

Li l QM H kl E M w? aw? V a Q b? 5%. a5 aw xxx mwx w m O H WH m wavwwwo'c Patented Mar. 11, 1913.

2 SHEETS-SHEET Z.

MEMH 3K Qwvemcoz 1 HIozmu a J. C. TASSEY.

TUBE EXPANDER.

APPLICATION FILED 313.19, 1912.

UNITED s'rATEs To all whom. it may concern:

JOE cnrnas rassnx, or nasnvmms, rnnnnss'nn.

' TUBE-EXPANDEB.

Original application filed Iay 25 191-1,

Be it known that I, Jon C. 'IAssnY, a citizen of the United States,residing at Nashville, in the county of Davidson and:

5. State of Tennessee, have invented-certain proved construction,

- present application the same in end 4 right hand end as shown in newand useful Improvements in Tube-Expanders; and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled.

in the art to. which it appertains to make and use the same.

This invention relates to devices for the-- expansion of the ends ofboiler tubes, the being a division of a rior application filed by me May25, 1911, Serial No. 629,483 such division being made on compliance withthe requirement of the Patent Cities.

The primary object of the present invention is to provide a tubeexpander of 1mby a motor. p

' A further object of the invention is to generally and specificallyimprove the construction of the several parts comprising a tubeexpander.

. With these and other objectsin view, the invention consists in. theimproved construction, arrangement. and combination of the parts of atube expander, hereinafter fully described and afterward specificallyclaimed.

In the accompanying drawings in which I have illustrated a preferredembodiment of my invention, together with as much other-mechanism as isnecessary to aproper understanding of this invention, Figure 1represents a view of the expander 1n side elevation, in place in a motorcasing, ready for operation; Fig. 2 represents a view of elevationlooking at the Fig. 1; Fig. 3 resents a sectional view taken on theplane indicated by the broken line 8-3 of Fig. 2; Fig. 4 represents adetall view in elevation of apart of the expander head d'etached; Fig. 5represents a front end elevation of the expander illustrated in Fig. 4;Fig. 6 represents a transverse vertical sectional view taken on theplane indicated by the broken line 6-6 of Fig. 3.

Like reference characters mark the same parts wherever they appear inany -of the figures of the drawings.

Referring specifically to the drawings, the casing for inclosing themotor; and ratchet mechanism for operating my tube expanderSpecification of Letters Patent.

adapted to be operated Patented Mal-.11, 1913..

Serial No, 629,483. Divided and mi; application flled lebruary 1e, 191aSerialzlio, 615,490.;

{includes substantially oval shaped heads or :ends 20 and curvedconnecting sides and ;bottom 22" the ointed ends of the oval shapedheads be'i'ngupward, and an additional casing asshown at 28, is securedto the left hand end of the main casing for containing parts" of themotor. There may project from this additional casing 28 a guiding plpeor bar 199' spaced below the tube-expanding mechanism in such positionthat when inserted into one of the boiler tubes said mechanism-will. bein position to operate on the-next. one above'al1 as described below.

In the casing is a motor which moves arms, not shown, radiating fromrings 58' and 59.- surrounding the expanding tool stock 60'whichisprovided with longitudinal ribs 61 which at this point transform saidstock into a ratchet wheel.

v Extending radially from the rings 58 and 59 are sleeves62 and 63 inwhich are mounted slidable and rotatable blocks 65 and 66 provided withratchet teeth 67 and 68 on their inner ends normally held in engage-vment with the ribs 61 on the stock 60, by springs 71, 72. The stems 69,70 of the blocks. 65 and 66 are connected by means of blocks. 77 and:78, links 75, 7:6, and suitable pivot pins 79, 80 and 81, to shafts 82and 83 which are geared together by pinions 88 and 89, one of saidshafts having a handle v 86 by means of which this mechanism may bemanipulated to turn blocks 65 and 66 to reverse the positions of theratchet teeth with relation to the ribs 61 on stock 60,.

thereby reversing the rotation r of the tool stock without reversing themotor, all as fully described in said original application beforereferred to.

v The stock 60 of the expander is mounted I in roller bearings 140 in abearing sleeve 141 The oscillating rings 58 and 59 herein-.

before referred to, which carry the sleeves 62 and 63 in which the pawlsoperate for engaging the longitudinal ribs 61 and the stock placement onthe stock 60 by means of the 60, are held against longitudinaldisbearing s1eeves141 and 148 bet-w'eenwhich they are locat d, asclearly indicated in Fig. 3.

and threaded as at 147 to receive the threaded end of a sleeve 148hereinafter referred to.

At 149 is shown a portion of the tube sheet of a boiler, inserted inwhich .is a portion of a tube 150. Within the tube 150, see Fig. 3 isshown a series of wedges 151 having their," inner faces tapered to fitupon the tapered end 152 of the main bolt 153 of the expander. The mainbolt 153 is threaded at its rear end as at 155 and is drawn into themiddle of the wedges 151 to expand them by means hereinafter to bedescribed, such ex pension of the wedges causing their annu larlyprojecting knuckles 156 to .form

: grooves 157 in the tube' just inside of the tube sheet 149.' Thewedges 151 are provided with suitable notches in their outer edgeswhich, when the wedges are brought together as in Figs-3 and 6 form analmost continuous-annular groove to receive the elastic band Mountedloosely-on the tapered'end 152 of the 'bolt-15 3'is a roller carryingframe comprisin a ring 158'upon which aremounted radialy prqecting-arms159 carrying at their outer ends curved plates 160 having 154, andprevent its displacebeveled side edges 161, said plates being arrangedin a circle and being concentric with the ring. The outer faces 0 thering 158 are flattened at points, and these fiat faces, indicated at.162, in connection with thagrooved sides 163 of the arms 159, and theedges 161 of the plates 160, tend to forma series of,

recesses, each of which 'is' adapted to receive a roller as at 164,165,166, and 167. The

o ring" 158, its radial :arms 159 and the plates 160, and' the rollersas specified all are inclosed within a cover sleeve 168,. in which areseated screws 169 which project through the inner face of the cover.sleeve beyond the plates 160, thereby preventin the entrance of saidplatesinto the .proper position. a i

To prevent wear upon the forward-edge of ring 158 and the'ends of theWedges 151,

a iriction ring 200 is'placed slidably on the tapered end 152 of thebolt 153, with a plain forward end face'to contact with the wedges,

its opposite end being 'formed' with a flan e 202 to engage in anannular rabbetint e forward end face of the ring 158.

' The rollers-164,165, 166, and 167 are'allprovided with peripheralgrooves and ribs formed at the edges of said grooves, the rib on the endof each roller which rests against the flat outer surface of the rin158, as indicated at- 170, being 'of'greater iameter than the'outer rib171.v i

'The edges 161 ofthe plates project into the groovesof the rollersadjacent to the turned over by the beading V 1 .Shrunk or otherwiserigidly secured upon the outside of thesleeve 148 is a ring 173 cover seeve beyond-a ,runnin position. vided in the sleeve insert a. screw 189tolrigidlysecure the stock." 60, sleeve 182, and sleeve'1 85against'acci 1 outer ribs 171 and the rollers themselves are i keptin'contact with the flat sides of the ring cesses in the outer ends ofthe rollers and bearing against the inside of the cover sleeve 168. Therollers 164 and 166 arebeadin rollers for turning the edge of the ,tubean the rollers 'and 167, having grooves and 158 by means of'springs 172seated in re-; The inner end of thestock 60 is recessed" ribs ofslightly difl'erent contour, are for the purpose of/"finishing the headafter it is rollers.

which carries on its outer edge a sleeve 174 /'and a series of screws175 ass radially "through this sleeve into the s eeve 148, at

the same time passing throughan opening a i in each of a series of pawls177 which are thus pivotally mounted on the outer face'of the sleeve148.- .These awls are provided with flat ends 179, round ed at oppositecorners and-bearing'against the ring 173 and a i ring 180 which isrigidly secured within" the cover 'sle'cve 168i Around each of the w :1

screws 175 is 'a spring'181, one end of which so a bears against thering 173 while the other tend -is-turned into anxopening in the pawl177, the tendency of this spring being to ends thereofto jam againsttherings 173 and 180, and thus prevent the turning of the I 173 and thepawls in one directlon, the' ring rounded ends of the-pawlspermitting-of their free turning cm the re an J inwardly extendingannular flange 184 which bears against theend of the stock 60. 1 Thesleeve-182 is'also provided with an ex--w- I terior thread which engagesa; sleeve 185 pro-f 186 which engages a flange on a ball parts betweenthe ball An opening 188 ispro} 143 through which to dental displacement.

' The sleeve 185 is with clutch teeth 1 0 which are adapted to engagewith similar teeth onlthe endrof a v in the opposite direction,-,; thesleeves 174, ring 173, and the'pawls and their sprin s, thus acting asa'clutch to govfitt-iveIrot-ation of 'the-sleeve-148- and the coversleeve 168. -l "1 The reduced'outer end of the stock 60 is. 1' threadedexteriorly and receives .onits. 't-hr ead-a sleeve 182, thethreads-being 'left handed. The sleeve 182 is provided with-an.outwardly projecting annular 'fiange 18351 which bears against the ring143 andiwit'h" 5 11v turn the pawl into position to cause the flat. 95'

rovided on its outer'end a;

sleeve 191, the last named sleeve being slid is able longitudinally on"a sleeve nut "192 threaded on themain bolt 153,'-but- .pre-

vented fromro'tating thereon by means of theseeve185.. V I

1 Upon the end of the sleeve 192 is threaded 5 the sleeve nut 192 andcarries, shrunk or otherwise rigidly secured thereto, a knurled 1 ring196' rovided with an inwardly project'- in'g annu ar 'fiange'to' engagewithan mg I .nular channel in the clutch ring 191',',Where nut 192caused by the turning-of the knurled i'ing 196, will cause thelongitudinal move mnt of the clutch ring 191 to-engage or disngage itsclutch teeth with the teeth 1900f.

a knurled ring197 and a screw 198 serves to fix the knurled rin againstremoval therefrom. The knurle ring 197 and sleeve nutmainline; a

understood from the following description;

I wedg'es 151, on a portion of the tapered end 152 of the main bolt 153of a size to permit of theirbeing passed into thetube tobeexpanded','are placed in position as shown in Fig. 3. i The. stock BOandits connected arts are then moved inwardon' the main" olt until therollers contact with the outer edge of'the tube. It is to be understoodThe knurled ring 196 is turned upon the main not until it restsagainstthe same and until the teeth 190 have been} disengagedfromfthe-teeth'of the sleeve 185. By now front surfaceyof the main nutwill bear against the roller: bearing sleeve1187 and 5 s readthe-wedgslIand tighten them in f .t e'tube, at the same time pressingthe stock 5 andall-of the partsupfto-therollers against the edge of thetube: wThe' knurled J50 rin 196. is' now turned nponbthe main nut untiltheteeth of the olutchsleev'elSfl-have 'b'een'engaged with 'thetteeth190.13 In the,

I meantime the rollers can bepressedagainst .jth'e 'outer'end of thetube by turning up the ilmurledring- 196 onfthe main 'nut. Thej motor isnow set in motionwhereby the pressure behind the rollers is increasedand by the travel of the ring 195- on the sleeve 192 will be hereinafterreferredltd' as the Y that the air has not yet been-"turned to" rotatethe stock.- Bypulling-on the main nut, the bolt 153 will be drawnoutwarduntil the wedges engage tightly in the-tube.

2. A device turning. the main nutonthebolt'153, the

draw the main belt 153 outward,which"will i main bolt, and a rubbingsleeve on-the main F 'stock"60. 'is rotated and the roller presserfcauses th'e .rollers to travelaround on the Q end of the tube beingexpanded,the shape they are fed slowly forward to their workifla Whenthe operation has-been complet'ed,; the

knurled ring 196' is turned back until-the teeth-of thegclutch sleeve19.1 are clear-of the teeth 190, when the machine will be held a betweenthe roller bearings at one end and the ball bearing at the other and itscon 'tinuous rotation will smooth off the work,

which will loosenthe main nut by whirling -.it off the end'of the boltand by tapping the end of the bolt with a soft hammer, the boltwi-ll'drop back 'in the wedges which will permit themto approach closelyenough'to r each other on a smaller part'of'the-ta-pered end-152, to bepulled out of the fiuei 4 I From the foregoing description taken inconnection' with the accompanying draw a ings, the'const-ruction andoperation of the invention "will be readily'understood with outrequiring a more extended; explanation. i;

;- i I Va'rious'changes in the" form, proportion, The operation" ofthemachine Wlllbd and the miror' details of construction may I.b'e'resorted' to without-departing fronl the j'the. pipe or bar 199 isprojected into a tube below, the one ;to be expanded, and the principleor sacrificing any of the advantages of the-invention as claimed. v

Havingthus' described my invention, what Iclaim-is;-

g-' 1:; :A device-of the character described comprising a central bolt,a roller carrier, loosely placed. thereon, rollers on the Arollercarrier, a presser sleeve for advanci g the r'ollers,fa' ring about-thepressersleeve, :1 cover for the rollers secured to said ring, a-

fianged ring in rear of the first ring, pawls pivoted in .theflangedring having straight 10o forward and rear ends with opposite cornersrounded, and 8; spring about. the pivot of each pawl tendin tomaintainit' in 0- 1 (",1 sition with-its straig t ends in'contactwith ithe two rin f 1 2 105, of the character described comprising a'centralbolt, "a-roller carrier-j loosely placed thereon, rollers on'the rollercarrier, wedges in a cylindrical series, means 11; for yieldinglymounting the ser es on the 1' o" end engaging; in saidrabbet; Q

3. A tube e anden comprising &a centrak bolt, tube beadingrollersfvapresser' sleeve on the bolt engaging saidrollers, aj'ringqro'12 tatable and anotherfast-"on the pres'ser sleeve, and .pawlsbetweenithefianged ring and the rotatable i v 4.'; A device of thecharacterdescribed comprising a casing having bearing sleeves, $1 25- atool stock-journaled in said sleeves, tube-9.; turning rollers at oneend of the stock, roller bearings at the opposite 'ends,'.a main boltthrou h the stock, a clutch sleeve on the 1 stock eyond therollerbearing, a main nut 1'30.

on the bolt adapted to be turned against the ball ring of said bearing,and a second clutch sleeve threaded upon the exterior of the main nut tobe engaged or disengaged with the first named clutch sleeve.

5. A tube expander comprising a casing,

'a tubular stock, a main bolt slidable therein,

a roller carrier on the forward end of the stock, sleeves on the casingsurrounding the tubular stock, roller bearings at one end and ballbearings at the opposite end carried by the sleeves and supporting thestock, and means on the main bolt for'securing the positions of thesleeves and stock.

6. A tube expander comprising a casing, bearing sleeves mounted thereon,ball and roller bearings in the sleeves, a tubular stock carried in saidbearings, a main bolt, tube expanding rollers carried thereon, a rollerpresser sleeve carried by the stock, a double flanged sleeve threaded onthe stock bearing against a bearingsleeve at one end and the tubularstock at the other end, a clutch sleeve carried by the double flangedsleeve, a main nut on the main bolt, and a clutch sleeve slidable on themain nut.

7. A tube expander comprising a casing, bearing sleeves thereon, atubular stock mounted in ball and roller bearings in said sleeves andcarrying a roller presser sleeve at its forward end, a main bolt in thelar flange bearing against the end of the stock, a clutch'sleevethreaded on the flanged sleeve and rovided with an inward flange, a ballbearlng between said flange and the flanged sleeve, amain nut onthe mainbolt bearing against said ball bearing, a clutch sleeve slidable on themain nut, and means for moving said clutch sleeve on themaln bolt. Intestimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. a J OE'CEPHAS TASSEY. Witnesses: I Y a 1 E. S.PINCKARD, J. B. BRADLEY.'

